As people dig ever deeper to find water, nearly 1,200 square miles of California is sinking 2 inches a month – destroying roads, bridges and farmland in the processOn a day when the skies were ashen from the smoke of distant wildfires, Chase Hurley kept his eyes trained on the slower-moving disaster at ground level: collapsing levees, buckling irrigation canals, water rising up over bridges and sloshing over roads.This is the hidden disaster of California’s drought.